(Зpq - 3q) (3q-7pq)
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Answer:
3pq(3q-7pq)-3q(3q-7pq)
9pq®-21p®q®-9q®+21pq®
9pq®+21pq®-21p®q®-9q®
30pq®-21p®q®-9q®
Step-by-step explanation:
where ever I have written (®) this symbol you have to put square- like 9pq2 nine pq square.
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